pipe drainage 利用地下沟（管）排除田间土壤多余水分的排水技术措施。土壤中的多余水分可 以从暗管接头处或管壁滤水微孔渗入管内排走，起到控制地下水位、调节土壤水分、 改善土壤理化性状的作用。暗管排水有便于田间机械化作业，节省用地和提高土地利 用率的优点。但一次性投资较大，施工技术要求较高，如防沙滤层未处理好，使用过 程中易淤堵失效。
... prefabricated directly buried insulating pipe 预制直埋保温管 vertical loop of buried-pipe 地埋管 buried pipe drainage 暗管排水 ...
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排水暗管埋深 depth of drainage pipe
One-dimensional water-salt movement under different conditions of irrigation and drainage was simulated by using HYDRUS-1D model. The effects on the reclamation of saline-alkali soil of conventional irrigation,water-saving irrigation,pipe drainage,and drainless condition were compared and evaluated.
利用HYDRUS-1D模型对不同灌排模式下土壤水盐运移进行一维数值模拟,分析比较了节水灌溉和常规灌溉、暗管排水和无排水对盐碱地的改良效果。
参考来源 - 不同灌排模式下土壤盐分动态模拟与评价·2,447,543篇论文数据，部分数据来源于NoteExpress
暗管排水可以很好的控制排除农田地下水和土壤含水量，提高土地利用率。
Pipe drainage system has big control of excluding agricultural groundwater and soil moisture and raise the utilization of land area.
暗管排水在20世纪中期初步形成，近30 ~ 40年在美国、日本、埃及等国家得到广泛应用。
The subsurface pipe drainage came into being just in the metaphase of20th century. It was broadly applied in USA, Japan and Egypt for30 ~ 40years.
以明沟排水为对照，论述了内陆干旱重盐碱区暗管排水在排水排盐、控制地下水位、提高土壤脱盐效果及提高作物产量等方面的优越性。
Subsurface pipe drainage in drought-prone region is superior to surface drainage in draining off water and salt, controlling ground water-level, and increasing crop output, etc.
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